<template>
    <div class="about">
        <h1>{{ id ? "编辑" : "新建"}}分类</h1>
        <el-form label-width="120px" @submit.native.prevent="save">
            <el-form-item label="上级分类">
                <el-select v-model="model.parent">
                    <el-option v-for="item in parents" :key="item._id"
                    :label="item.name" :value="item._id"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item label="名称">
                <el-input v-model="model.name"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" native-type="submit">保存</el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
    export default {
        props: {
            id: {}
        },
        data(){
            return{
                model: {},
                parents: []
            }
        },
        methods: {
            async save(){
                let res// eslint-disable-line no-unused-vars
                if(this.id){
                    res = await this.$http.put(`rest/categories/${this.id}`, this.model)
                }else{
                    res = await this.$http.post('rest/categories', this.model)// eslint-disable-line no-unused-vars
                }
                this.$router.push('/categories/list')
                this.$message({
                    type: 'success',
                    message: "保存成功"
                })
            },
            async fetch(){
                const res = await this.$http.get(`rest/categories/${this.id}`)
                this.model = res.data
            },
            async fetchParents(){
                const res = await this.$http.get(`rest/categories`)
                this.parents = res.data
            }
        },
        created(){
            this.fetchParents()
            this.id && this.fetch()
        }
    }
</script>